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5# manyu
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8 s% }1 v# B& p; r4 |% T找回以前的貼子,對我來說也不容易,還是簡單再說一遍好了 Possible causes are:
F: H& h& h+ L; Z1 p7 a5 N4 h1. sub floor did not hold tight to the floor joists. Screws are doing better than nails for this purpose.' V) n% x, ] u6 Q, T5 c4 a7 q
2. supporting beams are a bit too far away from each other.
9 @# I) P+ _" R) B v5 G, x3 l3. supporting beams are not level due to earth settlement.+ M4 e- S$ {5 _% l$ K/ e W
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For 2, you may need someone with engineering knowledge to find out, but there should be a building code governing the span distance. For 3, you can go down the basement to do a visual check yourself.7 O( F; b- L3 N' E. y# L F
But anyway, insist the builder to fix the problem right away, don't let them get away with 6 months time. |
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